// console.log( process.argv[2] )//process是nodejs中的进程对象
// 通过进程对象获取到用户输入的命令
let mode = process.argv[2] // 'dev'  /  'build'

switch (mode){
    case 'dev':
        require('./gulpfile-dev.js')
        break
    case 'build':
        require('./gulpfile-build.js')
        break
}
